Early warning indicator for financial crashes using the log periodic power law
In this article, we apply the Log Periodic Power Law (LPPL), introduced by Johansen <italic>et al.</italic> (2000), for capturing the recent stock market crash in the German stock index (Deutscher Aktien Index, DAX). The contribution of this article consists not only in describing the historical crash by the LPPL, but also in demonstrating how the LPPL can be used as an early warning indicator for financial crashes.